Belt-shifter.



, PATBNTED JAN. 9, 1906. F. W. SEYBOTH 8: E. K. A. BAUMANN.

BELT SHIFTBR. APPLICATION FILED JUNE 13, 1905.

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UNITED STATES PATENT onnion.

FRIEDRICH WILHELM SEYBOTH AND ERNST KARL ALEXANDER BAUMANN, OF ZWICKAU, GERMANY.

BELT-SHIFTER.

Specification of Letters Patent.

Patented Jan. 9, 1906.

Application filed June 13, 1905. Serial No. 264,985.

T0 at whom it may concern:

Be it known that we, FRIEDRICH WILHELM SEYBoTH and ERNST KARL ALEXANDER BAU- MANN, subjects of the Emperor of Germany, and residents of Zwickau, Germany, have invented a certain new and useful Improvement in Belt-Shifters, of which the following is a specification.

Belt-shifters for step-pulleys wherein the guiding-sleeve for the belt is arranged to be rotatable as well as slidably adjustable are known. The present device is, however, so far simplified that the said effect is obtained by means of two elements only, a guidingsleeve for the belt being mounted slidable and rotatable within the guide-fork.

In the accompanying drawings, which illustrate the invention, Figure 1 is an end view, Fig. 2 a side elevation, and Fig. 3 a plan, of the improved belt-shifter.

As shown, a is the spindle by whose rotation the belt-shifter is moved laterally. A

socket b, which is secured to a by means of r the set-screw it, carries the rods d, which are secured to b by pins 2'. Between the rods is freely movable the sleeve 6, formed as a grooved wheel and with a slotted cross-barf. The parts a I) d hi form an ordinary beltfork, which may be open or, as shown, may be closed. This fork is rotated in order to shift the belt; but it might be arranged to be moved rectilinearly. The whole device differs from an ordinary belt-fork only in the addition of the sleeve 6 f. The said sleeve is necessary when the belt with the fork is to be shifted on a step-pulley and is rotatable and at the same time slidable within the fork. The sleeve within the fork forms, therefore, the essential feature of the invention. Having now described our invention, what we claim, and desire to secure by Letters Patent of the United States, is

A belt-shifter for step-pulleys, comprising a spindle, a belt-fork secured to said spindle, and a ring having a belt-guiding slot, said ring being exteriorly grooved to rotatably and slidably engage said fork.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FRIEDRICH WILHELII-SEYBOTH. ERNST KARL ALEXANDER BAUMANN.

Witnesses:

M. L. (JREEVEY, G. MENZEL. 

